Adjustable eccentric of mineral or ore washing jigs.



Patented Aug. 27,1901. C.J. H0DGE.

ADJUSTABLE zcce'nrmc 0F MINERAL on one WA SHlNG JIGS.

(H0 musk.)

(Application filed. May 13, 1899.)

' 3 Sheets-Sheet l.

No. 581,419, Patented Aug. 27, l90l.

c. J. HODGE. r ADJUSTABLE ECCENTBIC 0F MINERAL 0R ORE WASHING JIGS.

(Afiplication filed May 13. 1899.) (No Model.) 7 3 She'eis-Sheet 2.

C. J. HODGEQ Patented Aug. 27, I90].

ADJUSTABLE EGCENTRIC 0F MINERAL 0R ORE WASHING JIGS.

(No Model.)

(Application filed May 13. 1899.)

l 34 I 1 7' l i Mi 1 3 sheets-sheet 3.

' UNITED STATES PATENT FFICE.

CHARLES J. IIODGE, OF HOUGHTON, MICHIGAN.

ADJUSTABLE ECCENTRIC OF MINER-AL OR ORE WASHING JIGS.

I SPEOIFIGATION forming part of Letters latent No. 881,419, dated August 27, 1901.

Application filed May 13, 1899.

I fl); 11/7 11']? 0/21 I! may concern:

lie it known that 1, CHARLES J. HODGE, a

lloughtou, in the county of Houghton and State of Michigan, have invented certain new and .usei'ul Improvements in Adjustable Eccehtiies of Mineral or Ore Washing Jigs, of which the following is a full, clear. and exact specification.

.M invention relates to mineral or ore washing lgs in which one or more vertically-reciprocating plungers are employed for agitating the water and mineral being treated, and it has more especial reference to the meohanieul movement forimparting a fast and slow motion to the plunger or plungers, it being desirable in such machines to cause the plunger to descend rapidly and rise slowly. The primary object of my invention is to rovidc an improved mechanical movement or thus reciprocating the plungers that may be attached to the shaft at a point between its bearings, so that the strain on the bean lugs when two plunger-s are employed will be equally distributed, a further object being to provide a mechanical movement capable nice adjustment, whereby the relative positions of the two plunger-s may be varied and the degree of variation between the fast and slow movements also changed at will.

With these ends in view my invention conslots in certain features of novelty in the construction, combination, and arrangement of parts by which the said objects and certain other objects hereinafter appearing are attained, all as fully described with reference to the accompanying drawings and more particularly pointed out in the claims.

In the said drawings, Figure 1 is a side elevation of a jig, partlyin vertical section, provided with my improvements. Fig. 2 is a plan view thereof partly broken away. Fig.

3 is an enlarged detail transverse sectional view taken on the line 3 3, Fig. 1. Fig. 4 is a detail transverse sectional view taken on the line 4 4, Fig. 9; and Figs. 5 and 6 are similar sections taken on the lines and 6 6, Fig. 9, respectively. Fig. 7 isa detail transverse section taken on the line 7 7, Fig. 9. Fig.- 9 is a transverse section taken on the line 8 8, Fig. 9. Fig. 9 is an enlarged sectic-n on the line 9 9, Fig. 3, and Fig. 10 is a Serial No. 716,692. (No model.)

diagrammatic view showing the movements of certain parts hereinafter described.

In illustrating my invention I have shown it as applied to a mineral or ore Washing jig. This is the greatest field of usefulness for the invention at present known to me; but at the same time it will be understood that my invention is not limited to this particular use, but may be applied wherever the characteristics of the'llevice are required or desirable.

1 2 represent the plunger-s of [the jig, 10-- cated,'as usual, in their respective plungercompartments 3 d and connected by yokes 5 6 or by any other suitable means to their respective operating pitznen 7 8," so that as .the pitmen reciprocate the plungers will rise and fall in their plunger-compartments and force the water upwardly through the screens 9, as usual.

In devices of this character it is desirable that the downward movement of the plunger be more or less rapid, so as to set up an energetic circ ulation of water upwardly through the screens; but the upward movement of the plunger should be slow. I will now describe the mechanical movement or device by which this fast-and-slow motion is imparted,

to the plunger-s from the driving-shaft 10.

The'driving-shaft is mounted in'suitable bearings 11 on two standards 12 13, arranged near the outer ends of the shaft, and between which standards the pitmen 7 8 are located, the shaft being provided on one end with the usual balance-wheel 14 and on the other end with the driving and idle pulleys 15 16. Secured on the shaft 10 at a point preferably midway between the bearings 11 is a crankarm 17, which is shown as being formed with a bifurcated end, (see Figs. 1 and 2,) in which is pivoted on a pin 18 a connecting link or arm composed, preferably, of two rods 19 20, whose ends pass through journal-box membars 21, which embrace the pivot-pin 18. The opposite ends of the rods 19 20 are likewise provided with two box members 22, which embrace a pivot-pin 23, and the opposite ends z of this pivot-pin 23 pass through or are secured in two inwardly-projecting wrists 2d rco 25, formed on or secured to crank-arms 26 27,

respectively, which impart motion to the eccentrics for operating the pitmen 7- 8, respectively, and as this pitmanoperating mechanism is the same in construction and of the shaft 10 and 28 the center of the 'ec-' 1 operation 'for' both pitmen, the mechanism centric 28, the line 19 representing the cnbeing; duplicated on opposite sides of the meeting rod or link 19 20, 18" the pin which-70 1 crank 17, a description of the mechanism on connects said rod'to the crank1'7, and 23' 5 oneside of such crank will sufiice for both. the pinwhich connects the rod to the crank 'lhe.c'r ank-arms 26 27 are each secured to or 26. Assuming the shaft to' be revolving formed on an eccentric 28, which in turn is in the direction of the arrow, it will be seen journaled on a trunnion 29, having an aperthat while the pin 18 is traveling in the cir- .75

- tare 30, through which the driving'shaft 10 cle 17 from the point a to the point I) the pin 10 passes and being provided with a down- 23 will have traveled in the circle 26 nearly wardly-exteuding bracket 31, secured by boltstwice the distance, or from the point of to the or screws 32 to the side frame or standard 13 point b,where the pin "23? is at substantially as one side and 12 on the other, and jourthe farthest point from the center 10. From 80 naled on the eccentric 28 is another eccentric this .point on until the pin 33 arrives at the 15 33,:surrounding which is an eccentric-strap place diametrically opposite the point I),

"345 The strap 34 on one side is connected where it is nearest the center 10, the mothe pitman 7 and that on the'other side tion of pin 23 decreases relatively to the flothepitman 8, "lheec'centric 33 is provided motion of pin 18. Thus in traveling from 85 ith a flange 35, in the face of which is the point b to the point 0 the pin 1 8'cause zola ormed an annular dovetailed "groove 36 or the pin 23 to travel only from the point I) groove having other salient edges, and the to the oint c, and from the point e to the cccentric'28 is provided with a flange 37, point the motion of the pin 18*isstillfur through which projects a number of bolts 38, ther decreased in the pin 23, and so on un- 0 having dilated heads seated in the annular til the pin 23 arrives at-a' point diametric- 25 groove 36 of vthe eccentric'33, whereby the two ally opposite the point 11' and substantially eccentrics 28 33 are rigidly connected toin line with the centers 10 v28, where the gether and compelled to revolve in unison motion of thepin 23 is at its minimum, and with capability of rotary adjustment with refrom this point on begins to gain on the mo- 5 iation to each other. Thebrackets 31, which -tion of the pin 18 until it exceeds it in its are located between the bearings 11, are each maximum degree at the point b. It will providedon their outer sides with flanges 39, therefore be seen that inasmuch as this vaagainst which the ends of the eccentrics 28 riation in the movement of the pin. 23 is deabut, thereby holding the eccentrics against pendent upon the distance between the cenroo longitudinal'movement, while the eccentricters 10 28 the degree of dilference between ,ptrap 34 on each of the eccentrics 33 is held the fast and slow movements ofthe plungers in place on one side by the flange 35 and on may be readily varied with a nicety by the the other side by the flange B9 or the-face of vertical adjustment of the brackets 31, by

the bracket 31. The aperture 30 in the trunwhich the center of the eccentrics 28 33 (innion 29 is vertically elongated to permit the dicated by the reference character28 in the 4o trunnion to be vertically adjusted, the holes diagram) may be raised or lowered with ref-,

40, through which the bracket-securing bolts erence to the center of the shaft 10, (indi- 32 pass, being similarly elongated to permit heated at 10 in the diagram.) It is also obviof thevertical movement of t the bracket 31, one that the length of stroke of the plunger no the face of the standard or frame 12 on one is dependent upon the distance of the cen- 45 side and 13 on the other side being provided ter of the eccentrics from the center of the with vertical guideways 41, between which trunnion 29. For the purpose of varying the bracket-31 is seated. With the mechanthis distance with a nicety the additional ical movement thus described it will be seen eccentric 33, adjustably secured to the eccenn 5 that as the shaft 10 revolves in the direction tric 28, is employed, it being apparent that ;o of the arrow the crank 17 thereon will imby loosening the bolts 38 and rotating the part a rotary movement to the crank-arms 26 eccentric 33 with reference-to the eccentric of the eccentrics 28, which, being connected :28 the length of throw of the outer eccento the eccentrics 33,wi ll also cause the rotatrio may be varied by bringing the center of mo tion of the latter and the consequent vertical the strap nearer to or farther from the cen- 5 5 reciprocation of the plungers, and the center ter of the trunnion 29, and it is further apof rotation of the eccentric 28 being eccentric parent that by means of this compound ad I to the center of the shaft 10 it necessarily justment the length of strokeand the char follows that while the crank 17 will revolve acterofstroke of the two plnngers may be at auniform rate of speed the crank 26 will varied independently.

6o revolve in a different circle and at a dilferen- Having thus described my invention, what tlal speed, gradually growing less as the cen- 'Iclaim as new therein, and desire to secure by I ter of the pin23 nears. the center of the shaft Letters Patent, isv i9. This may behest understood from the j -i. ";lhe combination of the plungers, adri-vdiagram shown in Fig. 10. In this view, 1'1" jug-shaft haying supporting bearings, two

'65 represents-the circle described bythe crank; .ecceli'tricshaving eccentric-straps, one eccen- 1?, and, afih'epresen ts'the circle described by} trio being connected ,with each of said plumthe crank 26, whi1e 10 represents the centen gersand-eccentric mosaic shaft, audal crank systantially as set forth.

connected to the shaft and having operative connection with both of said eccentrics, substantially as set forth.

2. The combination of a shaft having a 5 crank, an eccentric-strap having a pitman, an v eccentric embraced by said strap and being independent of said shaft and adjustable bodily transversely thereof and a connection between said crank and eccentric, substantially as set forth. 3. The combination of a shaft, a crank thereon, a trunnion adjustable transversely of the shaft, an eccentric on said trunnion, an eccentric-strap embracing said eccentric and 15 having a pitman and a connection between I :aidheccentric and crank, substantially as set ort .4. The combination of a shaft, a crank thereon, a trunnion having a slot through which said shaft passes and being adjustable transversely of the shaft, an eccentric-0n said trunnion, an eccentric-strap embracing said eccentric and having a pitman and a connection between said eccentric and crank, sub- 5.'The combination of a shaft, a crank thereon, an eccentric-strap having a'pitman, an eccentric in said strap, a-second eccentric arranged. in said first eccentric and beingadjustably secured thereto and a connection between said eccentrics and crank, substantially as set forth. 6. The combination of a shaft, a crank thereon, an'ec'centric-strap having a pitman, an eccentric in said strap,a second eccentric arranged in said first eccentric, one of said eccentrics being provided with an annular dovetailed groove and the other with a tightening-bolt engaging in said groove whereby said eccentrics may be rotatably adjusted .with reference to each other and a connection between one of said eccentricsand crank,

substantially as set forth.

7! The combination of a shaft, a crank which said shaft passes, a support for said thereon, an eccentric-strap having a pitman, 5 an eccentric in saidstrap, a second eccentric arranged in said first eccentric and having a crank-arm, said eccentrics being adj ustably secured together and a link connecting said crank-arm with-the crank on said shaft, substantially as set forth.

.8. The combination of a shaft, a trunnion having a vertically-elongated passage through trunnion, a bracketsecured to said trunnion and being vertically adjustable on' said sup port, an eccentric on said trunnion, an ec-' centric-strap ope ated by said eccentric, a crank-arm on said shaft and a connection between said crank arm and eccentric, substantiallyas set forth.

' 9. The combination of a shaft, 2. trunnion having an elongated passage for said shaft and being provided with the flange 39, an eccen tric journaled on said ,trunnion and abutting against said flange and being provided with the arm 26, a second eccentric journaled on said first eccentric and being adjustably secured thereto, an eccentric-strap having a pitman, embracing said second eccentric, and 70 a crank-arm on said shaft connected with said arm 26, substantially as set forth. I

10. The'combination of a shaft, a journal bearing therefor at or near each end thereof, a crank secured to said shaftetween said '75 bearings, two trunnions one on each side of said crank and through which trunnions said shaft passes, an eccentric journalcd on each of said trunnions, a connection between each of said eccentrics and said crank, an eccentrio-strap having a pitman, operated by each of said eccentric-straps, substantially as set forth. 3

CHARLES-J. Hones; Witnesses a EDNA B. JoHNsoN, F. A. HOPKINS. 

